130 FAMILY IT. CARABID^. 



214 (790). PLATYNUS ATBATUS Lee., Agass. Lake Sup., 1850, 205. 



Elongate-oval, rather slender. Black, shining; apical portion of an- 

 tenna? and tarsi piceous. Thorax subrotund, a little wider than long, the 

 reflexed margin but little wider toward the base; basal impressions deep 

 with a small tubercle. Elytra but little wider than thorax, the striae very 

 finely or obsoletely punctate; intervals distinctly convex. Length 8-9 mm. 



Sttniben. Laporle and Kosriusko counties; frequent. August 

 11 -August 28. A member of Hie boreal fauna. 



*215 (791). PLATYNUS MELANARII s Dej., Spec. III. 1827, 152. 



Elongate-oval, rather broad. Black, shining; tibiae, tarsi and basal 

 joint of antenna? dark reddish-brown. Thorax subrotund, as wide as long, 

 the margin wider and more strongly reflexed toward the base; depressions 

 large, with a distinct rugosity or tubercle near the angle. Elytra distinctly 

 wider than thorax, the strife of moderate depth, finely punctate. Length 

 8.5-9.5 mm. 



Throughout the State; common. Hibernates. January 1- 

 October 12. 



210 (7!>4). PLATY.M.S AFKIXIS Kirby. Fauna Bor. Amer., IV. 1837. 27. 



Elongate-oval, rather broad. Black or piceous, shining. Thorax sub- 

 rotund, a little wider than long, side margins narrow, scarcely reflexed 

 toward the hind angles, which are obtuse ; depressions wide, shallow and 

 without a tubercle. Elytra one-half wider than thorax, stria? shallow, not 

 punctured, the fifth usually with a dilated shallow impression near the 

 apex ; intervals flat. Length 8.5-9.5 mm. 



Lake, Starke and Koseiusko counties ; scarce. Occurs along the 

 sandy beaches of lakes. April 9-October 24. 



P. carl)o Lee., length 8-9 mm., was described from Lake Su- 

 perior and may possibly occur in northern Indiana. 



217 (796). PLATYNUS CORVUS Lee.. Proc. Phil. Acad. Nat. Sci.. 1860, 319. 



Elongate-oval; rather broad. Piceous black, shining. Thorax slightly 

 broader than long, sides rounded into base ; margins rather broad, narrowly 

 reflexed ; basal depressions wide, shallow, without a trace of tubercles. 

 Elytra oblong, much wider than thorax ; stria? rather deep, not punctured ; 

 intervals slightly convex, alutaceous. Length 9.5 mm. 



Laporte and Koseiusko counties ; rare. October 21-October 22. 

 Taken beneath rubbish along the beach of lakes. Our only species 

 having all three dorsal punctures on third stria. A member of the 

 boreal fauna. 



218 (800). PLATYNUS CUPBIPENNIS Say, Trans. Amer. Phil. Soc., II, 1823, 



50; ibid. II, 474. 



Elongate, rather broad. Green, strongly polished; disk of elytra cu- 

 preous; under surface blackish-bronzed. Thorax longer than wide, the 



